Gustave a



PATENTED SEPT. 20, 1904.

G. A. ZUNDBL.

KEY FRAME.

APPLIGATION HLBD MAR. 1891903.

NO MODEL.

GUSTAVE A. ZUNDEL,

Patented September 20, 1904.

PATENT Orricn.

OF NEW YORK, N. Y.

KEY-FRAME.

SPECIFICATION forming part of Letters Patent No. 770,549, datedSeptember 20, 1904.

Application led March 18, 1903.

T0 LZZ zzz/1,07% t may concern:

Be it known that I, GUSTAVE A. ZUNDEL, a citizen of the United States,residing in New York, borough of Manhattan, and State of New York, haveinvented certain new and useful Improvements in Key-Frames, of which thefollowing is a specification.

The object of this invention is to provide a cheap and durablesupporting -frame for a Morse key. These keys have been hitherto mountedupon frames provided with adjustable screws forming bearings for thebearingpoints of the key-arbor. The object of this invention is toprovide a bearing for said arbor which does not require the employmentof these bearing-screws, such a frame being especially desirable for thecheaper grades of instruments, such as learners sets.

For this purpose the invention consists of a key frame comprising a baseportion and bearing-standards rising one at each side of said base andprovided each at its upper portion with an entrance-slot for the journalor bearing portion of the key-lever and at the inner portion of saidentrance-slot with an upwardlyextending bearing-socket adapted toreceive said journals.

The invention consists, further, in certain details of construction andcombinations of parts, which will be fully described hereinafter andiinally pointed out in the claims.

In the accompanying drawings, Figure l is a perspective View of atelegraph-key provided with my improved key-frame. Fig. 2 is a plan Viewof the sheet-metal blank from which the key is formed. Fig. 3 is a planview of the completed key-frame, and Fig. 4 is a vertical longitudinalsection on line 4 4, Fig. 3.

Similar letters of reference indicate corresponding parts.

Referring to the drawing, A indicates the blank of my improvedkey-frame. Said blank is formed from sheet metal-such, forexample, assheet-iron of approximately onesixteenth of an inch in thickness. It isshaped by being stamped, sawed, or otherwise cut from the sheet. Saidblank consists of a body portion a and two oppositely-located Serial No.148,292. (No model.)

arms a, one at each side of said body portion extending laterallytherefrom in opposite directions. Each is provided with a recess or slota2, extending transversely from the forward edge of the arm inwardly(rearwardly) to approximately the middle of the same. At their innerends or portions said recesses a2 merge into sockets a3, located at theouter side of said recesses a2ac'. e., at that side of the same towardthe ends of said arms a' and removed from the body portion a. At itsforward portion said body portion of the blank is provided with twoopenings 05, arranged approximately on the longitudinal center line ofthe same. At its rear portion said body portion o is provided with athreaded opening a, also arranged approximately on the longitudinalcenter line of the body portion a. At its left sident'. c., at the lefthand side of the center line of said body portion -is arranged in thebody portion an opening a7.

For forming the key-frame from said blank the laterally-extending arms aare bent in upward direction, so as to stand approximately parallel andvertical. By this operation the sockets a3 are brought into position atthe upper sides of the recesses a2, the recesses and sockets of onestandard being located opposite those of the other standards. Saidkey-frame is secured to the base Boi1 the telegraph instrument by meansof a screw passing upward through said base and engaging in the threadedopening a6. It is also secured by a screw which passes upwardly throughthe opening a7 and which forms also the pivot for the switch-lever b2and by a screw passing in upward direction through the base B, openingand insulating-washer fand into the contact b5. O indicates thekey-lever, which is provided with laterallyextending journals or bearingportions c, adapted to enter the recesses a2 of the bearing-standards a/of the key-frame and to be seated in the sockets a3 of saidbearing-standards. c' indicates a key-spring which is arranged beneaththe lever at the forward side y of the bearings o. Said spring c' is acoilspring and is located at its lower portion in the opening a5 of thebase a of the key-frame. It rests upon the base B of the instrument.

IOO

- At its upper end it bears against the under side of the key-lever Cbetween the bearings c and the key-grip CZ. c2 indicates anadjusting-screw at the rear of the key, said screw bearing at its lowerend upon the rear portion ofthe base a of the keyframe. By thisconstruction the spring maintains the journals 0 of the key-leverconstantly in raised position yieldingly in the sockets as. r)The entirekey is thereby retained in proper position.

It is obvious that the entrance-recesses t2 may be inclined instead ofhorizontal, as shown in the drawings. That portion of each standardadjacent and below the bearing-socket o1c the same forms a guide, aidingin the insertion of the journal into the bearing-socket. It also formsan abutment which, being located adjacent and opposite the open side ofthe socket, serves for preventing ready dislodgment of the journal.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. The combination of a sheet-metal keyframe,comprising a base and standards, said standards each provided with arecess extending horizontally into the same from the edge thereof, abearing-socket in each standard communicating with said recess, a keyhaving journals adapted to enter said recesses and sockets, and meansretaining said journals yieldingly therein, substantially as set forth'.

2. The combination of a key-frame, comprising two standards, abearing-socket in one standard, a bearing-socket in the other standard,a recess extending horizontally into the latter standard andcommunicating with said bearing-socket of the same, a key having ajournal adapted to enter said first socket, and

a journal adapted to enter said recess and socket, and means retainingsaid journals yieldingly in said sockets, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

GUSTAVE A. ZUNDEL.

